Hi all
The single fixed axle/rear bogie was a way of getting a bigger longer tender with the flexibility to handle curves that a fixed tri-axle wheelbase couldn't.

Then distances got greater and steam locos got bigger, thirstier and hungrier, which meant more fuel and water was needed to get from "here" to "there" and bigger tenders again which led to the double bogie tender.

Si, the stock Bachmann On30 "arch bar" trucks (under almost all their freight cars) in fact scale out to have a 3' wheelbase and look pretty much like the trucks under Silver City cars-in 1:35 scale. I ain't kidding!

WCG

____________________It doesn't matter if you win or lose, its' how you rig the game.

W C Greene wrote:Si, the stock Bachmann On30 "arch bar" trucks (under almost all their freight cars) in fact scale out to have a 3' wheelbase and look pretty much like the trucks under Silver City cars-in 1:35 scale. I ain't kidding!